Floor drain trap



July 16, 1929. A s. NEWTON FLooR DRAIN TRAP Filed Feb. l5, 1929 ZZ Z3:Nm/TOR. Mw JM;

A TTORNEYS.

Patented July 16, 1929.

UlTED STATES ALBERT S. NEWTON, OIE' PROVIDENCE, RHODEISLAND.

FLOOR DRAIN TRAP.

Application led February 15, 1929. Serial No. 340,093.

My .invention relates to floor drain traps oit that type wherein adepending baille plate is vertically slidable into yand out of contactwith its annular seat. This type automatic baille plate has beenheretofore objectionable because the baille plate rod became immovablein its vertical guideway because oit 'the accumulation, upon the portionot the vrod adjacent the baille plate, ol foreign matter, such asgrease, soap and sand, carried by the passing water. This condition oitthe water common where waste is supplied from the floor oi" a showerbath, or of a garage.

The essential objects of my invention are to overcome the above defectof operation, and to attain this end by a simple construction and at aminimum of expense. To the above ends primarily my invention consists inlsuch parts and in such combinations oil parts as tall within the scopeot the appended claims.

In the accompanying drawings which form a part et this specification.

Figure 1 is a central vertical. section ot my novel device,

Figure 2, a transverse section ot the same on line 2--2 of Figure 1, and

Figure 3, an enlarged vertical section of the movable baille parts.

Similar reference characters indicate similar parts throughout theviews.

My trap consists of a casingcomprising a substantially cylindrical body5 having intermediate its length and integral therewith an internalannular flange G in which is a bearing ring 7 supported by an externalannular shoulder 8 resting upon the flange. An opening 9 formed by theflange and ring constitutes a passage between the upper and lowerchambers 10 and 11 respectively in the body. An inlet 13 in the bottomportion of the body is formed by the horizontally disposed lower end 14of a vertical inlet pipe 15 whose upper end is integral with the top 17oil? the body, and with a vertically disposed elliptical extension 18integral with the body, and forming a chamber 19 above the latter andthe pipe. An external cupped annular liange 22 locks the extension in acement iioor 23. A strainer plate 24 having openings 25 is attached tothe top of the extension by screws 2G.

From an outlet opening 28 in the upper por tion 01" the body extends anoutlet or discharge pipe 30 leading to the sewer. The body is providedwith a threaded opening 32 adapted to receive the threaded periphery 34ot a detachable cover 35 l'lush with the top of the body. Centrally otthe 'cover is a polygonal projection 37. 'The cover and projection havea vertical cylindrical recess or bore 38 extending to the chamber 10. Inthe top of thepprojection is a threaded opening`39 to receive thethreaded end 41 ot a guide sleeve 42 concentric with the recess 38 andlaterally spaced from the wall of the projection to. lorm an annularspace or recess therebetween.

A convexe concave baille plate 45 rests upon the seat formed by the tlange 6 and ring 7, and has internal with its central portion a verticalshoulder 47 provided with an external thread 48. Integral with the topof the shoulder is a post 49 of less diameter than the shoulderprojecting a short distance within the guide sleeve 42 and slidable inthe latter. The top of the post is normally spaced from the lower end ofsleeve 42. A guard tube 51 has upon its lower end an internal thread 52engaging the thread 4S of the shoulder 47. The tube 51 slidably embracesthe sleeve 42 and extends into the guideway formed by the annular bore38 in the cover, but is spaced from the upper end of the latter.

The waste water with its accumulated impurities and adhesive matterdescends from the top surface of the lloor 23 through the strainer plate24, chamber 19, inlet pipe 15, and upwardly through the seal chamber 11,upper chamber 10, and outlet pipe 30. In its upward course the pressureof the water elevates the baH'le plate 45 from its seat. rIhe upwardtravel oli' the plate is limited by the contact of its shoulder 47 withthe lower end of the guide tube 42. After the described movement oit thewater the baille plate is returned to its seat by gravity where itprevents back pressure through the trap.

It will be observed that in no position of the baille plate, either atrest or during recip rocation, is the post 49 exposed to the foul waterpassing through or lodged in the chamber 10 because et the shieldingetlect of the guard tube 51. Hence no clogging effeet between the post49 and the guide sleeve 42 can occur to prevent proper action of thebaille plate 45.

I claim 1. In a lioor drain trap, a body provided with an inlet andoutlet, said body being provided with an opening spaced from the inletand outlet, an annular seat in the body inter- Cil mediate the inlet andoutlet, a Cover detaeliably mounted in the opening7 a guide sleeve onthe cover, a post slidably mounted in the sleeve, a baille plate carriedby the rod engageable with the seat, and a guard Vtube supported by theplate loosely surrounding the sleeve.

2. In a floor drain trap, a body provided with an inlet and outlet7 saidbody being provided with an opening spaced from the inlet and outlet, anannular seat in tlie body intermediate the inlet and outlet, a Coverdetachably mounted in the opening, a guide Sleeve supported by the CoverCentrally thereo't', a battle plate engageable Witli the seat, acylindrical shoulder centrally disposed upon the plate, a post upon theshoulder and disposed centrally thereof loose in the sleeve, and a.guard sleeve fast to the shoulder slidably engaging the sleeve.

3. In a floor drain trap, abody provided with an inlet and outlet, saidbody being provided with an opening spaced 'from the inlet and outlet,an annular seat in the body intermediate the inlet and outlet7 a coverdetaeliably mounted in the opening, a vertical projection disposed uponthe center of the post,sai d cover and post being provided with avertical eavity, a guide sleeve fast to the end of the projection andlaterally spaced therefrom to forni an annular guideway, a post slidablymounted in tlie sleeve, a battle plate carried by the rod engageablewith the seat, and a guard tube supported by the plate enclosing thesleeve and slidable in the guideway.

ln testimony Whereoil I have affixed my signature.

ALBERT S. NEWTON.

